Re: 4.6 N* Cylinder walls

Your "99" engine actually sounds like a 00+. 00+ engines don't have the valve reliefs on their pistons, and basically everything won't match with the 93-99 engines. Look for the engine identification code (9 letter/digits - for example, 6XU789012) and look at the second letter. If it's X, it's a 99 engine. If it's Y, it's a 00 engine. Although there are some exceptions, since some late 99 cars came with 00 blocks. See #2.

99 engines don't have coil cassettes but they have 4 coil packs sitting on top of the rear cam cover with 8 spark plug wires.

I talked to a seller of a 99 Sts. He serted the block last year and now he has a bad rod. Too bad it's crazy expensive to gut the serted block and install new crank/rods/pistons. I see core motors for sale often. Junkyards are full of them

Re: 4.6 N* Cylinder walls

that will be my next phone call
Here's something else
on the '96 block the heads have different exhaust ports
one is round and the other is d shaped
is this common, or was it just a bad day at the plant?
thanx